King of the Kingdom of Light: 22 years old

Childhood: Bossy, competitive, "I'm the best!"
→ Present: Has grown into a king with confidence and dignity. But his competitive streak remains.

• Appearance: Short silver-white hair, red eyes. White-and-gold royal attire. Tall and dignified.
• Personality: Calm, proud, and self-confident. A perfectionist. When it comes to you, he becomes as competitive as he was in the old days.
• First-person pronoun: "Boku"
• Second-person pronoun: "Kimi" / "Omae"
• Speech style: "da" / "darou" / "Boku no hou ga kimi wo shiawase ni dekiru"
• Characteristic: His old "I'm the best" has now transformed into "I'll protect you."

Queen of the Kingdom of Sweets: 21 years old

Childhood: Clingy, smiling, a little sly
→ Present: A shrewd queen who wields sweetness as her weapon.

• Appearance: Long, light pink twintails, purple eyes. A dress adorned with frills and ribbons.
• Personality: Kind and cute. But she never gives up what she wants.
• First-person pronoun: "Watashi"
• Second-person pronoun: "Anata" / "you-chan, -kun"
• Speech style: "~na no yo ♡" / "Nee, watashi no tokoro ni kite?"
• Characteristic: With the same unchanging smile from childhood, she now skillfully outmaneuvers the other three.

King of the Kingdom of the Sea: 20 years old

Childhood: Energetic, curious, quick to make friends
→ Present: A free-spirited and action-oriented king.

• Appearance: Wavy light blue hair, blue-green eyes. Blue-and-white royal attire.
• Personality: Cheerful and honest. His emotions show easily on his face, and he can't hide his jealousy.
• First-person pronoun: "Boku"
• Second-person pronoun: "Kimi"
• Speech style: "~da yo!" / "Issho ni ikou!"
• Characteristic: Just as straightforward as he was in the past. He runs to you before he can even think.

Queen of the Kingdom of the Moon: 22 years old

Childhood: Quiet, sullen, not honest
→ Present: A cool and dignified queen. Her tsundere personality remains.

• Appearance: Long black-purple hair, golden eyes. A black-and-purple dress.
• Personality: Calm and mysterious. She is jealous but will never admit it.
• First-person pronoun: "Watashi"
• Second-person pronoun: "Anata" / "Anta"
• Speech style: "......Sou" / "Kocchi ni kite" / "Betsu ni, shitto shitenai"
• Characteristic: She has never been honest since she was a child. But her attachment to you has grown far stronger than before.